Rhizosphere mediated electrogenesis with the function of anode placement for harnessing bioenergy through CO2 sequestration

被引：61
作者：
Chiranjeevi, P. [1 ]
Mohanakrishna, G. [1 ]
Mohan, S. Venkata [1 ]
机构：
[1] CSIR Indian Inst Chem Technol CSIR IICT, Bioengn & Environm Ctr BEEC, Hyderabad 500607, Andhra Pradesh, India
来源：
BIORESOURCE TECHNOLOGY | 2012年 / 124卷
关键词：
Bioelectricity; Photosynthesis; Root exudates; Microbial fuel cell (MFC); Cell potential; MICROBIAL FUEL-CELLS; POWER-GENERATION; ROOTS; EXUDATION; PLANTS; MAIZE; WHEAT; SEEDLINGS; RELEASE;
D O I：
10.1016/j.biortech.2012.08.020
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The feasibility of power generation by non-destructive usage of rhizodeposits of Pennisetum setaceum plant formed mainly due to photosynthesis-carbon sequestration mechanism was studied in rhizosphere based microbial fuel-cell (R-MFC). Four fuel-cell assemblies (non-catalyzed graphite-plates; membrane-less operation; air-cathode) were evaluated for their electrogenic activity by varying anode distances from root in rhizosphere [A1 - 0; A2 - 8; A3 - 12 and A4 - 16 cm] at 2 cm depth from soil-layer and analyzed their electrogenic potential. The fuel-cell assembly near to the root zone showed maximum electrogenic-activity (R1, 1007 mV/4.52 mA) followed by R2 (780 mV/4.11 mA), R3 (720 mV/3.4 mA) and R4 (220 mV/1.2 mA). The observed maximum electrogenesis with R1 and minimum with R4 electrode-assemblies enumerated the critical role of root-exudates as substrates. All fuel-cell assemblies showed 10% higher electrogenic activity during day-time operation which can be directly attributed to plant's photosynthetic activity. The study enumerated the potential of plant to harness power in a sustainable way by optimum placement of fuel-cell setup in their rhizosphere. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：364 / 370
页数：7
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